Electrical toothbrush



March 31, 1942. L. H. ROGERS 2,278,095

ELECTRICAL TOOTHBRUSH Filed June 13, 1941 Tnventor [OVEN //(/GH Foe/5R5,

' Attorney -Patente d Mar. 1942 UNITED STATES PATENT OFFICE ELECTRICAL roo'rmmusn Loven Hugh Rogers, Del Rio, Tex. Application June 13, .1941, Serial No.- 397,955

1 Claim.

This invention relates to an electrical tooth brush, the general object of the invention being to provide a casing forming a handle for .the device and containing a motor, an angle-shaped piece detachably connected to one end of the casing and carrying the brush with means for driving the brush from the motor. I

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which- Figure l is an elevational view of the device.

Figure 2 is a view of a brush which can be used in place of the rubber brush shown in Figure 1.;

H3 at its outer end for inter-engaging with the prongs it to communicate movement of the I 22 of the handle II and a gear 21 on the shaft l2 Figure 3 is a section on the line 33 of Figure 1. v

Figure 4 is a section on the line 4-4 of Figure 3.

Figure 5 is a view of the front end of the ing with the handle piece removed.

In these views the numeral I indicates the casing of elongated shape and is so formedas to form a handle and this casing contains a motor 2, the conductors 3 of which lead from therear end of the casing and a rotary switch 4 is carried by the casing for controlling the flow of current to the motor. The shaft of the motor is shown at I and extends through an opening in a cover plate 8 at the front end of the casing. A cover member 1 preferably of hard rubber or compomeshes with the gear 2| to impart rotary move-.

ment to the brush from the shaft II. The brushes can be of different forms such as the rubber brush 23 shown in Figure l or a bristle brush shown at 24 in Figure 2, and a manually operated latch member 25 is pivoted to the handle member II and has one end engaging a notch 26 in each brush stem fol-detachably holding the stem in the head 22. This latch member is of the spring type and has an arcuate part 25' for engaging a part of the member II to releasably hold'thelatch member in position 1holding a brush stem in operated position in the ead.

If desired the sleeve I! can form an integral part of the motor shaft.

Thus it will be seen that I have provided a motor driven device with which different types of that the advantages and novel features of the 3d invention will be readily apparent.

appended claim.

Having described the invention, what is sition is attached to the plate 3 through means of the screws 8 and the shaft 5 extends into the cover member where it terminates in a threaded part 5'. A short sleeve 9 is threaded in the end of the cover member I and carries a projection II. The dental right angle handle piece H has a bayonet slot l2 in one end thereof for receiving the pin I0 so that the handle piece II is detachably connected to the casing through means of the sleeve 8. A shaft I2 is rotatably arranged in the handle piece and a sleeve I3 is fastened to the inner end of the shaft by means of a screw ll, access to which'can be had through an opening it in the inner end of the handle member. A pair of prongs I6 are formed on the inner end of the sleeve I! or that end which extends into the sleeve 9 and a sleeve I1 is threaded to the part I of the shaft 5 and has a pair of prongs It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the claimed as new is: y

In combination withva casing having a motor therein and a handle member detachably connected with the casing and having a shaft there in, a sleeve detachably connected with the motor shaft and having a pair of oppositely arranged prongs projecting from its outer end, a second sleeve through which the inner end of the shaft in the handle member passes, a screw for ad- Justably and detachably connecting the second sleeve to the last-mentioned shaft and a pair of prongs on the second sleeve for interlocking with the prongs of the first sleeve when the handle member is connected with the motor casing. whereby the shaft in the handle member is rotated from the motor, said prongs tapering to the free ends. I LOVEN HUGH ROGERS. 

